The Peer-To-Peer Straightforward Protocol (P2PSP) is an application-layer protocoldesigned for real-time broadcasting of live media over a P2P overlay network. As manyother P2P protocols, it minimizes the bandwidth requirements on the source nodes(which executes the process in charge of sending the data stream) by proﬁting of theupload bandwidth available in the links of the peers. However, the P2PSP has severalcharacteristics that make it diﬀerent of other previous proposals: (1) the protocol issimple enough to allow a straightforward implementation, (2) churn tipically produces asmall number of lost blocks spreaded in the time and therefore, error concealmenttechniques based on signal interpolation can be applied more eﬀectively, (3)peers can be behind NATs, (4) the protocol is media-agnostic, (5) the P2PSP isextremely modular which allows you to adapt it accurately to your requirements,(6) it can be deployed together client/server streaming services, among othersadvantages.